assertion  retraction  graph  subject      predicate    object                    datatype    annotation
1          0           graph  IAO:0000115  IAO:0000115  The official definition.  xsd:string  "{""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:http://purl.obolibrary.org/obo/iao.owl""}]}"